MESON Chess Problem Database

Problem Display
PID: 179201 (b3r2Q/3N1Bn1/3P4/KP6/2pNk1P1/1pR1ppP1/3nPp2/3Rbr2 w - - 0 1)

Popovski, Aleksandr

Comm., Phenix, 2015

b3r2Q/3N1Bn1/3P4/KP6/2pNk1P1/1pR1ppP1/3nPp2/3Rbr2

#2

12 + 12

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Rxc4#
    • 1...Sb1
      • 2.exf3#
    • 1...Sf5
      • 2.Sc5#
    • 1...Sh5
      • 2.Sc5#
    • 1...Se6
      • 2.Qe5#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Rxe3#
      • 1...Re6
        • 2.Qxa8#
      • 1...Se6
        • 2.Qe5#
      • 1...Sb1
        • 2.Rd4#
      • 1...Sf5
        • 2.Sc5#
      • 1...bxc2!
    • 1.Sxf3?
      • threat
        • 2.Sc5#
        • 2.Sf6#
      • 1...Re6
        • 2.Qxa8#
      • 1...Se6
        • 2.Sf6#
        • 2.Qe5#
      • 1...Re5
        • 2.Sf6#
      • 1...Rc8
        • 2.Sf6#
      • 1...Sh5
        • 2.Sg5#
        • 2.Sc5#
        • 2.Qd4#
        • 2.Qh7#
        • 2.Qxe8#
      • 1...Sxf3!
    • 1.Qxg7?
      • threat
        • 2.Sc5#
      • 1...Re5
        • 2.Qxe5#
      • 1...Rc8
        • 2.Qe5#
      • 1...Re6!
    • 1.Qh7+?
      • 1...Kxd4
        • 2.Rxc4#
      • 1...Sf5!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Rxe3#
      • 1...Sxf5
        • 2.Sc5#
      • 1...Re6
        • 2.Qxa8#
      • 1...Se6
        • 2.Qe5#
      • 1...Sb1
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • K(i);OGATEB,P-FLIGHT,P_SPINS(c),XS(E)::R1(C),XP(h)
    • S(c);N_GUARD,P_PINR(C)::P(B),XP(g)
    • S(j);::S(J)
    • S(j);OGATE::QAR1(L)
  • Tries
    • Try
      • S(E);
      • Threat
        • R1(C),XP(f)
      • Vars
        • R(l);OGATE::QAB(L),XB(k)
        • S(j);OGATE::QAR1(L)
        • S(c);OGATE,P_PINR(C)::R1(A)
        • S(j);::S(J)
      • Refutation
        • P(e);XS(E)
    • Try
      • S(E);XP(g)
      • Threat
        • DUALS(2)
      • Vars
        • R(l);OGATE::QAB(L),XB(k)
        • R(l);P_PINP(H)::S(J)
        • R(l);::S(J)
      • Refutation
        • S(c);P_PINR(C),XS(E)
    • Try
      • Q(L);XS(j)
      • Threat
        • S(J)
      • Vars
        • R(l);N_GUARD,P_PINP(H)::QAR1(L),XR(l)
        • R(l);N_GUARD::QAR1(L)
      • Refutation
        • R(l);
    • Try
      • Q(L);CHECK
      • Vars
        • K(i);P-FLIGHT,P_SPINS(c),XS(E)::R1(C),XP(h)
      • Refutation
        • S(j);P_SPINS(j)
  • Actual
    • S(E);
    • Threat
      • R1(C),XP(f)
    • Vars
      • S(j);XS(E)::S(J)
      • R(l);OGATE::QAB(L),XB(k)
      • S(j);OGATE::QAR1(L)
      • S(c);OGATE,P_PINR(C)::R1(A)
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